公开(公告)号：US20220120189A1

公开(公告)日：2022-04-21

申请号：US17422407

申请日：2020-02-21

Applicant: Danfoss A/S

Inventor： Alonso Perez ,  Lin Xiang Sun ,  Jin Yan ,  Tianlei Li

IPC: F01D11/12 ,  F01D11/02 ,  F01D15/00 ,  F16J15/447 ,  F25B31/00

Abstract: A compressor according to an exemplary aspect of the present disclosure includes, among other things, a rotor configured to rotate with respect to a stator, the stator having an abradable portion. At least one labyrinth seal is between the rotor and the stator, wherein the labyrinth seal comprises a plurality of teeth extending from the rotor toward the abradable portion.

公开(公告)号：US11143193B2

公开(公告)日：2021-10-12

申请号：US16515668

申请日：2019-07-18

Applicant: Danfoss A/S

Inventor： Jin Yan ,  Lin Xiang Sun ,  Arnold Martin Schaefer ,  Ruiguo Gao

IPC: F04D27/02 ,  F04D17/10 ,  F25B1/053

Abstract: A refrigerant compressor according to an exemplary aspect of the present disclosure includes, among other things, an impeller arranged in a main flow path and including a plurality of vanes. The impeller is configured to rotate about an axis. A channel is outside the main flow path. A first orifice fluidly couples the channel to the main flow path upstream of the vanes, and a second orifice fluidly couples the channel to the main flow path downstream of leading edges of the vanes.

公开(公告)号：US12146501B2

公开(公告)日：2024-11-19

申请号：US18197782

申请日：2023-05-16

Applicant: Danfoss A/S

Inventor： James Wilson ,  Jin Yan ,  Lin Xiang Sun ,  Ruiguo Gao ,  Brenden Richman

IPC: F01D11/02 ,  F04D17/10 ,  F04D29/16 ,  F01D5/18 ,  F01D5/28 ,  F04D29/10 ,  F16J15/447

Abstract: In some aspects, the techniques described herein relate to a refrigerant compressor, including: a stator; a rotor configured to rotate with respect to the stator; and at least one step seal between the rotor and the stator, wherein the step seal includes a first tooth and a second tooth extending from the rotor toward the stator, wherein a downstream surface of the first tooth and an upstream surface of the second tooth are arranged at an angle relative to one another, wherein the angle is less than 90°.

公开(公告)号：US12050036B2

公开(公告)日：2024-07-30

申请号：US17795358

申请日：2021-03-16

Applicant: DANFOSS A/S

Inventor： Lin Xiang Sun ,  Tianlei Li ,  Brandon Keith Pritchard

IPC: F25B31/00 ,  F04B35/04 ,  F04B39/06 ,  F25B1/053 ,  F25B1/10 ,  F25B5/02 ,  F25B41/20 ,  H02K11/33 ,  H02P1/28 ,  H02P1/52

CPC classification number: F25B31/006 ,  F04B35/04 ,  F04B39/06 ,  F25B1/053 ,  F25B1/10 ,  F25B5/02 ,  F25B41/20 ,  H02K11/33 ,  H02P1/28 ,  H02P1/52 ,  F25B2700/2104

Abstract: This disclosure relates to refrigerant compressors, and, in particular, relates to cooling for the power electronics of such compressors. An example refrigerant system includes a main refrigerant loop in communication with a condenser, an evaporator, and a compressor. The refrigerant system further includes at least one cooling line configured to direct refrigerant from the main refrigerant loop to cool a chamber containing electronic components. A method is also disclosed.

公开(公告)号：US20230392836A1

公开(公告)日：2023-12-07

申请号：US18032890

申请日：2021-11-11

Applicant: DANFOSS A/S

Inventor： Tadeu Mendonca FAGUNDES ,  Jin Yan ,  Lin Xiang Sun

IPC: F25B31/00 ,  F04D29/58 ,  F04D25/06 ,  F04D17/10

CPC classification number: F25B31/006 ,  F04D29/5806 ,  F04D25/06 ,  F04D17/10

Abstract: A refrigerant compressor according to an exemplary aspect of the present disclosure includes, among other things, a cooling jacket including a plurality of perforations configured to cause refrigerant flowing through the perforations to form impingement jets and further configured to direct the impingement jets onto a surface adjacent a stator. The refrigerant compressor may be used in a heating, ventilation, and air conditioning (HVAC) chiller system, for example.

公开(公告)号：US11692557B2

公开(公告)日：2023-07-04

申请号：US17546161

申请日：2021-12-09

Applicant: Danfoss A/S

Inventor： James Wilson ,  Jin Yan ,  Lin Xiang Sun ,  Ruiguo Gao ,  Brenden Richman

IPC: F01D11/02 ,  F04D29/16 ,  F04D17/10 ,  F01D5/18 ,  F01D5/28 ,  F04D29/10 ,  F16J15/447

CPC classification number: F04D29/162 ,  F04D17/10 ,  F01D5/186 ,  F01D5/189 ,  F01D5/28 ,  F01D11/02 ,  F04D29/102 ,  F05D2240/55 ,  F16J15/4472

Abstract: In some aspects, the techniques described herein relate to a refrigerant compressor, including: a stator; a rotor configured to rotate with respect to the stator; and at least one step seal between the rotor and the stator, wherein the step seal includes a first tooth and a second tooth extending from the rotor toward the stator, wherein a downstream surface of the first tooth and an upstream surface of the second tooth are arranged at an angle relative to one another, wherein the angle is less than 90°.

公开(公告)号：US20220252073A1

公开(公告)日：2022-08-11

申请号：US17618910

申请日：2020-07-31

Applicant: DANFOSS A/S

Inventor： Lin Xiang Sun ,  Brandon Keith Pritchard

IPC: F04D17/12 ,  F04D27/00 ,  F24F1/24 ,  F25B31/00 ,  H02K11/25

Abstract: A refrigerant compressor according to an exemplary aspect of the present disclosure includes, among other things, a first stage and a second stage downstream of the first stage, and a cooling line configured to cool power electronics. The cooling line is configured to be switched between a first mode and a second mode. The first mode is configured to dump refrigerant between the first stage and the second stage, and the second mode is configured to dump refrigerant upstream of the first stage.